Ducted fan aircraft



FIG. 1 is front elevation view of the ducted fan aircraft;

FIG. 2 is a right side elevation view of the FIG. 1 aircraft;

FIG. 3 is a rear elevation view of the FIG. 1 aircraft;

FIG. 4 is a left side view of the FIG. 1 aircraft;

FIG. 5 is a top plan view of the FIG. 1 aircraft; and,

FIG. 6 is a bottom plan view of the FIG. 1 aircraft. 

The ornamental design for a ducted fan aircraft, as shown and described. 